Antipope Leo X

Antipope Leo X (23 November 1039-) was Antipope from 27 April 1069, set up by Henry IV of Germany in Aquileia.

Biography
Karl was born to a family of Catholic Germans on 23 November 1039, and he was consecrated as the Prince-Bishop of Aquileia during the 11th century. On 27 April 1069, Emperor Henry IV of Germany set Karl up as "Antipope Leo X" in opposition to Pope Alexander II, and he reigned in Aquileia.